For information about Internal-to-External (I2E) conversions and how exceptions are handled in sessions where Unicode Pass Through is enabled, see Exporting from a UNICODE Server Character Set.
I2E conversion generates an exception when a character in the server repertoire cannot be converted to the client repertoire.
For example, an attempt to convert a multibyte KANJISJIS character to an ASCII character generates a conversion exception.
For most I2E character conversion, exceptions are ignored and the offending character is converted to the predefined error character for the target client character set.
For information on error characters, see Error Characters.
Conversion from GRAPHIC
The I2E conversion from GRAPHIC to single-byte characters in any client character set generates an SQL error.
To get the hexadecimal representation for GRAPHIC characters, you can use CHAR2HEXINT .